Emergency Room Procedure The first few hours in hospital...

Transcription

1 Emergency Room Procedure The first few hours in hospital...

2 ER 5 level Emergency Severity Index SOP s for Stroke Stroke = Level 2 Target Time = 1 Hour 10 min from door 2 Doctor 25 min from door 2 CT 60 min from door 2 Needle Nurse is first contact! Stroke 2009, 40: , Debbie Summers et al

3 ER Procedure: History Ask or confirm with EMS, family members: Time of onset? Evolution of symptoms? Concomitant illnesses/drugs? Fluctuation in symptoms? Recent operations/traumas?

4 ER Procedure: Critical Functions Examine cardiac function using: continuous BP when needed continuous ECG when needed chest x-ray at admission Monitor body temperature: (treat with antipyretic at > 37.5 C) Monitor blood gases/ph: (maintain pco 2 < 4.0 kpa)

5 ER Procedure: Immediate i.v. Therapy Vomiting: anti-emetic Hyperglycaemia (blood glucose > 12 mmol/l): insulin Very high BP (systolic > 220, diastolic > 130 mm Hg): consider use of short-acting antihypertensive Agitation: short-acting sedative

6 ER Procedure: Differential Diagnosis Syncope Partial epileptic seizure with Todd s paresis Migraine attack (aura) Hypoglycaemia Hysteria Intoxication Subarachnoid haemorrhage Neuroinfection Neoplasm Brain injury Multiple sclerosis Peripheral vertigo

7 ROSIER Setup and run a thrombolysis service for acute stroke. Keith W Muir, Tracey Baird, 2010

8 Florence Nightingale ( )

9 ER Procedure: CT Examination Look for: Evidence of bleeding (= haemorrhagic stroke) Hyperdense MCA (= MCA occlusion) Early infarct signs Hypodensity of grey or white matter Obliteration of cortical sulci Obscured basal ganglia Loss of insular ribbon

10 ER Procedure: Ultrasound Diagnosis In skilled hands, ultrasound may show: Carotid occlusion or stenosis MCA occlusion or stenosis Vertebrobasilar occlusion Extracranial dissection

11 Acute ischaemic stroke ER Procedure: Eligibility Criteria for Thrombolytic Therapy Age < 80, previously independent Onset < 4.5 hours before thrombolysis CT normal or indicates focal infarction with no evidence of haemorrhage (patients with extended signs of infarction are not eligible) NIH - SS score 4-23

12 ER Procedure: Exclusion Criteria for Thrombolytic Therapy Minor/improving stroke signs CT signs of haemorrhage History of intracranial haemorrhage Seizure at stroke onset Stroke/Head injury in previous 3 months Major surgery/trauma in previous 2 weeks GI or urinary haemorrahage in previous 2 weeks Arterial puncture / LP in previous 1 week Systolic BP >185mmHg and Diastolic BP >110mmHg Glucose level < 50 mg/dl or > 400 mg/dl Heparin therapy within 48 hours( PTT) Oral anticoagulants (INR >1.7), platelet count < Don t give if major infarct signs present early Done by experienced stroke physician/team

13 Diagnosis NIH-Stroke Scale 0-1 normal or near normal examination. 1-4 minor stroke though moderate stroke moderately severe stroke > 20 severe stroke

14 NINDS rtpa Trial National Institute of Neurological Disorders and Stroke This was a double blind, randomized, placebo-controlled trial of IV rtpa at 0.9 mg /kg ( 10% a bolus,and the rest as a 1 hour infusion, 90 mg maximum)

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17 NINDS rtpa Trial Conclusion : Despite an increased risk of symptomatic ICH, treatment with rtpa provided a consistent benefit in functional outcome at 3 months without increasing mortality

18 Setup and run a thrombolysis service for acute stroke. Keith W Muir, Tracey Baird, 2010

19 Time of arrival Setup and run a thrombolysis service for acute stroke. Keith W Muir, Tracey Baird, 2010

20 ER Procedure: Ongoing Measure Diagnosis Labs UKE, FBC, COAG Monitoring neurological and cardiovascular status Patient evaluation CT scan Doppler ultrasonography Observation Respiration Hydration Feeding/swallowing Embolism Deep venous thrombosis Urinary tract infection Bedsores Septicaemia Treatment Fluid (non-glucose), 1ml/kg/h Insulin (if glucose) > 12 mmol/i Antihypertensive agent (exceptionally) Oxygen if saturation < 92% Antipyretic for temperature > 37,5 C Transfer to critical care unit THROMBOLYSIS with rt-pa in selected patients Associated conditions Diabetes Hypertension Epilepsy Myocardial infarction AF/Dysrhytmia Heart failure Medications Cerebrovasc Dis 1996; 6:

21 Blood pressure in Acute Stroke CPP = MAP ICP Leave BP if below 220/120!!! Treat BP if signs of end-organ damage Use Labetalol or Nicardipine (CHEST Guideline 2011) For tpa eligible patient BP must be 185/110

22 ER Procedure: Aspirin Aspirin IST + CAST + TOAST 160mg 300mg within 48hours p.o. OR for recurrent stroke 30% OR for death 8 % OR for further stroke or death 11% BUT Non significant 21% increase in symptomatic intracranial haemorrhage For every acute strokes treated 9 deaths/stroke recurrences prevented

23 Specific Therapy Specific Therapy Heparin, low molecular weight heparin NO evidence of routine use, increased risk of haemorrhage (level I) Full-dose heparin may be used Atrial fibrillation Cardiac source with high risk or re-embolisation Arterial dissection High grade stenosis (level IV)

24 Specific Therapy Haemodilution therapy not recommended (level I) Neuroprotective agents not recommended (level I)

25 Brain Attack! Acute stroke = brain attack Every minute matters: time is brain Combat therapeutic nihilism

26 Florence Nightingale ( )